Final answer:
Pneumonia is a disease where the alveoli in the lungs become inflamed and filled with fluid, typically caused by infections, leading to symptoms like coughing and breathing difficulties. Treatment often includes antibiotics and prevention can include vaccination.
Step-by-step explanation:
An infection of the lungs that leads to inflammation of the lungs and fluid accumulation is known as pneumonia. Pneumonia is a respiratory tract disease where the alveoli, which are the tiny air sacs in the lungs, become inflamed and filled with fluid, usually due to an infection. This fluid accumulation inhibits proper gas exchange, leading to symptoms such as coughing, chest pain, difficulty breathing, and fever. Treatment for pneumonia often involves antibiotics, especially if the cause is bacterial. Vaccines are available to help prevent pneumonia, one of the major causes of morbidity and mortality worldwide.